| Castricum to Caguas (Puerto Rico) | 4,418.27 mi (7,110.52 km) |
| Castricum to Cahokia (Illinois) | 4,349.53 mi (6,999.89 km) |
| Castricum to Calabasas (California) | 5,546.42 mi (8,926.10 km) |
| Castricum to Caldwell (Idaho) | 4,932.40 mi (7,937.93 km) |
| Castricum to Caledonia (Wisconsin) | 4,055.46 mi (6,526.63 km) |
| Castricum to Calera (Alabama) | 4,496.86 mi (7,236.99 km) |
| Castricum to Calexico (California) | 5,535.79 mi (8,909.00 km) |
| Castricum to Calhoun (Georgia) | 4,357.23 mi (7,012.28 km) |
| Castricum to California (Maryland) | 3,839.88 mi (6,179.69 km) |
| Castricum to California City (California) | 5,462.66 mi (8,791.29 km) |
| Castricum to Callaway (Florida) | 4,604.37 mi (7,410.02 km) |
| Castricum to Calumet City (Illinois) | 4,101.43 mi (6,600.61 km) |
| Castricum to Calverton (Maryland) | 3,821.82 mi (6,150.63 km) |
| Castricum to Camano (Washington) | 4,815.78 mi (7,750.24 km) |
| Castricum to Camarillo (California) | 5,552.03 mi (8,935.13 km) |
